This is what i got for cic, hope this will help.
in the paragraph 117 (9)(d) of the Immigration and refugee Protection Regulations excludes from future sponsorship any foreign national who is not declared/examined at the time his/her prospective spinsor applies for and obtains permanent residence. If you (or any of your family members) fails to declare and present for examination any family member as defined by the Regulations, then u (or ur family member) will not be able to sponsor that undeclared family member at a later dater as a member of the family class.
Subsection 1(3) of the Regulations defines "family member" in respect of a person as (a) the spouse or commin -law partner of the person; (b) a dependent child of the person or of the person's spouse or common law partner; and (c) a dependent child of a dependent child referred to in paragraph.
All family members, whether or not they are accompanying you to Canada, MUST be declared and presented for examination to assess whether they are admissible to Canada. A false declaration on your IMM5406 (additonal family information form), any failure to declare a family member, or failure to present a "family member" for examination may be found to constitute misrepresentation and may render you inadmissible to Canada